From 540c67f7015834c185da1bb5e89eddc5b6b33fac Mon Sep 17 00:00:00 2001
From: Dhilan007 <wenhai.lin@chukong-inc.com>
Date: Tue, 1 Apr 2014 15:03:17 +0800
Subject: [PATCH] Label:fixed possible appear OpenGL error 0x500.

---
 cocos/2d/CCLabel.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/cocos/2d/CCLabel.cpp b/cocos/2d/CCLabel.cpp
index 4a6d110979..8c7c8bbefd 100644
--- a/cocos/2d/CCLabel.cpp
+++ b/cocos/2d/CCLabel.cpp
@@ -1082,7 +1082,7 @@ void Label::drawTextSprite(Renderer *renderer, bool parentTransformUpdated)
     if (_shadowEnabled && _shadowNode == nullptr)
     {
         _shadowNode = Sprite::createWithTexture(_textSprite->getTexture());
-        if (_shadowNode)
+        if (_shadowNode && _blendFuncDirty)
         {
             _shadowNode->setBlendFunc(_blendFunc);
         }